I have a starting issue on my supra, i have had the engine out, due bodywork, after i have put the engine in the car again, it won't start..   have changed the timingbelt, (have checked timing and it is spoton, have checked timing mark on engine 2 on the top and crankshaft) and i have changed the o rings on the injectors.   if i bridge fb + b+ on the diagnostic terminal the engine starts up, but don't run on all 6 cylinders, and if i give it a little throttle the engine stalls/engine cut out.